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A bottle of LONDONTOWN&
A hand holding a bottle of Get Strong Nail Hardener by LONDONTOWN, an essential for those dedicated to nail care and achieving the strongest nails.
A bottle of Get Strong Nail Hardener by LONDONTOWN features an open brush applicator. Text highlights its benefits: real results in 1 week, prevention of chipping, splitting, and breakage, and noticeably stronger nails for the strongest nails. Ideal for comprehensive nail care.
Comparison of fingernails before and after three weeks of using LONDONTOWN&
The survey results highlight Get Strong Nail Hardener&
Get Strong Nail Hardener
A close-up of a hand with well-manicured nails next to text describing LONDONTOWN&
A bottle of LONDONTOWN&
A hand holding a bottle of Get Strong Nail Hardener by LONDONTOWN, an essential for those dedicated to nail care and achieving the strongest nails.
A bottle of Get Strong Nail Hardener by LONDONTOWN features an open brush applicator. Text highlights its benefits: real results in 1 week, prevention of chipping, splitting, and breakage, and noticeably stronger nails for the strongest nails. Ideal for comprehensive nail care.
Comparison of fingernails before and after three weeks of using LONDONTOWN&
The survey results highlight Get Strong Nail Hardener&
Get Strong Nail Hardener
A close-up of a hand with well-manicured nails next to text describing LONDONTOWN&
4.7
Rated 4.7 out of 5 stars
848

Get Strong Nail Hardener

For your longest, strongest nails

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Transform nails to be long, strong, and resilient. Two coats of this strengthening treatment featuring innovative, multi-polymer technology create a shield-like barrier that immediately fortifies the nail plate and helps harden over time. Resilience is improved in as little as one week—with a noticeable increase in hardness—and with the infusion of our proprietary Florium Complex, nails get the perfect dose of the hydration and nutrients needed to support healthy nail growth.


  • Free of phthalates, parabens, silicones, and gluten
  • Vegan and cruelty-free

12 ml / .4 fl oz

For best results use as a treatment: Apply 2 coats to bare nails every other day for the first 2 weeks. Get Strong Nail Hardener should be removed before applying a fresh coat of treatment. During week 3 and 4 apply 2 coats to bare nails every 4-5 days. Repeat process as needed. 

As a base coat: Apply one coat to clean nails and follow with your favorite lakur shade.

Ethyl Acetate, Butyl Acetate, Alcohol Denat., Nitrocellulose, Acrylates/Hydroxyesters Acrylates Copolymer, Isopropyl Alcohol, Acetyl Tribuyl Citrate, Adipic Acid/ Neopenyl Glycol/ Trimellitic Anhydride Copolymer, Dipropylene Glycol Dibenzoate, Etocrylene, Brassica Campestris (Rapeseed) Seed Oil, Brassica Campestris Flower Extract, Chamomilla Recutita (Matricaria) Flowe Extract, Cucumis Sativus (Cucumber) Fruit Extract, Oenothera Biennis (Evening Primrose) Flower Extract, Carthamus Tinctorius (Safflower) Seed Oil, Tocopheryl Acetate (Vitamin E), Dimethicone, CI 42090, CI 60725

Get Strong Nail Hardener
4.7
Rated 4.7 out of 5 stars
Based on 848 reviews
Total 5 star reviews: 742 Total 4 star reviews: 50 Total 3 star reviews: 20 Total 2 star reviews: 8 Total 1 star reviews: 28
93%would recommend this product
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848 reviews
  • DS
    Dorothy S.
    Verified Buyer
    I recommend this product
    Pros Would Purchase Again
    Rated 5 out of 5 stars
    4 months ago
    Strong Nail Hardener

    Loving it. Nails last over 5 days and Wii not buy any other brand

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    L Profile picture for LONDONTOWN
    LONDONTOWN
    3 months ago

    Thank you so much for your fantastic 5-star review, Dorothy!

    We’re delighted to hear you’re loving the Get Strong Nail Hardener and seeing such great results, 5+ days of lasting strength is exactly what we hope to deliver. Your loyalty and trust in our brand truly mean the world to us.

    Thank you for sharing your experience! ✨

  • KK
    Karen K.
    Verified Buyer
    I recommend this product
    Pros Performs as Described, Would Purchase Again, Exceeds Expectations
    Rated 5 out of 5 stars
    5 months ago
    The Absolute Best

    I have used many so called strong nail hardener products from other companies. Nothing comes close to the quality of this from Londontown.

    My nails have never been so long and strong!

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  • HA
    Heidi A.
    Verified Buyer
    I recommend this product
    Pros Gentle, Would Purchase Again, Performs as Described
    Rated 5 out of 5 stars
    6 months ago
    Nails definitely stronger

    Nails definitely getting stronger after a week

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  • LS
    LISA S.
    Verified Buyer
    I recommend this product
    Pros Performs as Described, Exceeds Expectations, Would Purchase Again
    Rated 5 out of 5 stars
    7 months ago
    This is the bomb! Just buy it!

    I never write reviews, but this nail hardener is really amazing. NOTHING has helped strengthen my nails before this. I tried every single product on the market. Spent hundreds of dollars trying to heal my nails after gel manicures. They were paper thin and would not grow. Within 2 weeks of using this product, along with the illuminating polish and base coat, top coat... I have nails again. They are strong and healthy. Regrowing healthy nails was something i almost gave up on until these products.

    8f you're on the fence... Just buy it! You will not regret it!

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  • BT
    Barbara T.
    Verified Buyer
    I recommend this product
    Pros Exceeds Expectations
    Rated 5 out of 5 stars
    7 months ago
    Like no other

    This was a great surprise. A product that actually works.

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Frequently Asked Questions

What is the Get Strong Nail Hardener designed to do?
Get Strong is a strengthening nail treatment that works to fortify both upon application and over time. For best results use in the four-week cycle detailed in the How to Use section or use as a strengthening base coat.
Who is this nail hardener best for?
This formula is ideal for anyone who would like stronger, harder nails, especially those with weak, peeling, or brittle nails. Whether your nails are naturally soft or damaged from gels or acrylics, Get Strong Nail Hardener helps support strength and resilliance.
How do I apply Get Strong Nail Hardener?
For best results use as a treatment: Apply 2 coats to bare nails every other day for the first 2 weeks. Get Strong Nail Hardener should be removed before applying a fresh coat of treatment. During week 3 and 4 apply 2 coats to bare nails every 4-5 days. Repeat process as needed.
As a base coat: Apply one coat to clean nails and follow with your favorite lakur shade.
Does this product contain harsh ingredients?
Get Strong Nail Hardener is a 21+ Free formula, meaning that it has been formulated without over 21 undesirable ingredients commonly found in traditional nail formulas. It is free of phthalates, parabens, silicones, and gluten. It is vegan and gluten-free.
Can I layer polish or top coat over it?
Absolutely. Get Strong doubles as a treatment and a base coat, making it a seamless part of any manicure. Just apply, allow 2-3 minutes to set, and follow with your favorite lakur and a top coat for added shine and longevity.
How long does it take to see results?
Everyone’s nails are different, but with consistent use, many users notice their nails look healthier and feel stronger over time. Because this formula works as both care and prep, you’ll experience its benefits whether you’re using it alone or building a full manicure.